Hello, Just wondering if there was such a thing as a 240V power meter, e.g. something that looks like: http://www.jaycar.com.au/mains-power-meter/p/MS6115 ...but can feed the usage figures into a Linux system (e.g. Raspberry pi) or something (would be happy with Arduino) for recording or graphing or something. Or am I dreaming? Ok, to answer my own question, google has the following results: * https://openenergymonitor.org/emon/buildingblocks/how-to-build-an-arduino-e… * http://www.instructables.com/id/ARDUINO-ENERGY-METER/ * http://www.instructables.com/id/Arduino-home-energy-monitor-shield/ Still researching the above. However... something already prebuilt, calibrated, and maybe even approved by local authorities would be better... Ideally I would like to be able to monitor the power consumption - individually - of the major power users in my house (e.g. fridge, dishwasher, maybe stove if possible, computer servers, etc) in an automatic manner (so writing down the figures on a daily basis doesn't count). Which would mean having a number of monitoring points, ideally as cheap as possible. Also, ideally I am interested in something that is available today, not something that may or not be provided by my power distributor at some random point in time in the next 10 years. So far I have seen stuff like this: https://www.element14.com/community/community/raspberry-pi/blog/2013/04/05/… ... but need something that works in Australia. Regards -- Brian May <brian(a)linuxpenguins.xyz> https://linuxpenguins.xyz/brian/